BB-6 Commercial Garage Door Bottom Bracket Pair
Heavy-duty 11-gauge bottom fixtures with Milford-style cable pins for compatible commercial garage doors using 2-inch or 3-inch track.
The BB-6 Commercial Bottom Bracket Set mounts at the lower left and right corners of a compatible sectional garage door. Each bracket supports the bottom roller area and provides a secure attachment point for the lifting cable.
Made from heavy-duty 11-gauge steel, the BB-6 is designed for demanding commercial door applications. Its Milford-style drilled pin allows the lifting cable to be secured using the proper clevis and cotter-pin arrangement.
11-Gauge Steel Heavy-duty construction provides dependable support for commercial sectional garage doors.
2" & 3" Track Designed for compatible commercial door systems using either 2-inch or 3-inch track.
Sold as a Pair Includes one bottom bracket for each side of a compatible commercial garage door.
Key Features
- Heavy-duty commercial garage door bottom bracket set
- BB-6 bracket design
- Made from durable 11-gauge steel
- Compatible with applicable 2" and 3" track systems
- Milford-style drilled cable pin
- Provides the lower attachment point for the lifting cable
- Supports the bottom roller and lower corner of the door
- Full lower flange provides additional mounting support
- Suitable for commercial sectional garage doors
- Ideal for replacing bent, cracked, worn, or corroded bottom fixtures
- Includes left- and right-side brackets
Product Specifications
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Model: BB-6
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Product Type: Commercial garage door bottom bracket pair
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Material: Steel
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Steel Thickness: 11 gauge
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Cable Connection: Milford-style drilled pin
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Track Compatibility: Compatible 2" and 3" track
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Mounting Location: Bottom left and right corners of the door
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Primary Functions: Lifting-cable attachment and bottom-roller support
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Door Application: Commercial sectional garage doors
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Package Quantity: One left and right pair
Approximate BB-6 Dimensions
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Overall Height: Approximately 10-3/4" to 11"
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Overall Width: Approximately 4-1/2" to 4-5/8"
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Side Flange: Approximately 1-5/8"
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Bottom Flange: Approximately 1-5/8" with full lower lip
Published dimensions differ slightly among BB-6 manufacturers and suppliers. Measure the original bracket and compare the profile and mounting pattern before ordering.
Common Applications
- Commercial sectional garage doors
- Warehouse and service-bay doors
- Doors using 2" commercial track
- Doors using 3" commercial track
- Replacing damaged cable-attachment fixtures
- Replacing bent or worn bottom roller brackets
Left & Right Pair: The package includes the brackets required for both lower corners of the door. Left and right are determined while standing inside the building and looking outward through the door opening.
Milford-Style Cable Pin: The drilled pin provides an attachment point for the lifting cable using a compatible clevis or cable fitting and retaining pin. Confirm the existing cable-end design before installation.
Hardware Contents: Some BB-6 sets are supplied with clevis pins and cotter pins, but Service Spring’s public listing does not provide a complete itemized hardware list. Rollers, lifting cables, fasteners, cable fittings, and additional mounting hardware should be considered separate unless specifically confirmed with the order.
Compatibility Notice
Verify the existing BB-6 bracket profile, overall height, width, side-flange depth, bottom-flange depth, mounting-hole pattern, track size, roller-stem diameter, cable-end design, door thickness, section construction, and available clearance before ordering. Matching only the BB-6 name does not guarantee compatibility with every commercial door.
Not an Outside-Hookup Bracket: Standard BB-6 brackets and outside-hookup BB-6 brackets may have different flange depths, cable positions, dimensions, and mounting arrangements. Compare the original bracket carefully before ordering.
Extreme-Tension Safety Warning: Commercial garage door lifting cables and bottom brackets remain under extreme spring tension, even when the door is open. Never loosen, remove, cut, or adjust a bottom bracket while the spring or cable system is under tension. Sudden cable release can cause severe injury, death, or major property damage. Replacement must be performed by a qualified commercial garage door technician.
